Discovery, Scientific
First Mining of Silver
The founding of silver was primarily a good thing for stockpiling at the beginning and limited use with things like cutlery. Mass stockpiling of this resource eventually worked out as it turns out that it is used as a currency, the Zumer people in the Njmer Forest did not have a concept of money as food was a communal past time, you gained a house depending on your job/role in the tribe, and the goals for individuals is too go forwards with technology. But when Currency had to be made to trade with other Nations Gold was the Highest Value Currency, Silver was the Middle Value Currency and Copper was the Low Value Currency.